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4

In my experience, this kind of hole is often caused by slugs. Slugs stay hidden during the sunlight period and pop out during wet night and rainy days, making them difficult to spot. Note that it can be caterpillar, thumbtack (not sure of this translation) or even birds. For identifing the "pest", watch for your plants patiently and minutely. To fight the ...


0

Assuming you've not yet isolated and treated the infestation, and without the requested photographs showing the problem, the most likely cause is, in fact, scale insect, but even were it aphid, neem spray or a horticultural oil spray should work, though you would need repeat treatments. You are right when you say sooty mould is a consequence of an ...


0

You could try washing off the sooty mould with a wash containing a weak solution of soap, if you have aphids they can be farmed by ants who then feed on the sticky exudate. Do you have ants crawling up and down the stems and branches? You could also try ensuring that there is enough air flow around the branches to minimise the mould. placing a bird box very ...


5

You probably have an Aphid problem - it's not a disease per se and it's not mold, just an infestation. They leave the white gooey stuff on the bottom of the leaves. I use Bug-B-Gone and it seems to work fine. You can buy it in a concentrate and then mix with water and spray with a spray bottle. I think it's about 15 bucks from Home Cheapo or amazon. If you ...


3

Check the woody parts of the plant and underside of the leaves. It would have been useful to know what part of the world you're in, but I'm suspecting Magnolia Scale, which does look different depending which stage of growth the scales are in. Usually, you'll find brown to purplish scales with white cottony stuff exuding around them under the leaves and ...



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